Sintering machine pallet



Nov. 22, 1932. H. J. STEHLI SINTERING MACHINE PALLET Filed Jan. 20. 1930rzlljiil2i2lklllllllllllzlllllllllnwrlrlllia) j} V EN T OR. {3 WATTORNEY Patented Nov. 22, 1932 1,888,296

.UNITED STATES PATENT; OFF-ICE HENRY J. STEELI, OF CEDAR GROVE, NEWJERSEY sm'rnnme mcmnn PALLET A neemn filed January 20, 1930. Serial No.422,220.

Heretofore, in order to strengthen iron unbreakable for the usesintended, by reason castings, and particularly with comparativeof thepresence of such rod. 1y thin sections that have to withstand shockWhile the percentage of nickel in the steel and strain, a reinforcingmember, such as rod or membermay be variable for the dean ordinary steelor iron bar or rod, has been sired casting, I find that a nickel steelrod 50 placed 1 the mold before the iron for the including steel of anydesired composition casting has been poured therein, to embedhaving-from 3% to 5% of nickel therein when the bar in the resultingcasting. It has been used as a reinforcing memberin cast iron found thatordinary carbon steel rods or bars, becomes non-crystalline and hasincreased embedded in the iron castings, crystallize and strength. 7 55become brittle, doubtless due to the sudden My improvement may beused invarious heating of the rods or bars by the enveloping relations wherestrong metal castings are demolten cast metal and the gradual coolingsired and the same is particularly useful in 7 thereof, hence such rodsor bars become usemaking pallets for sintering machines which less inthe castings for the purposes of a reincontain heated ores whiletraveling on tracks. 60 forcement. In the accompanying drawing Fig. 1 isa The O j ect of my iIIVeII iOD is t0 produce l plan view of a palletfor a sintering machine, inforced metal castings that will have innd Fi2 is a section on line 2, 2, in Fig. 1. creased strength as compared tothe strength, The numeral 1 indicates an iron casting'in of anunreinforced casting of the same metal. th f f a ll t fo a sinteringmachine 5 In carrying out my invention I place in a embodying myimprovement, wherein the mold a reinforcing member, Such s a 61 nickelsteel reinforcing rod 2 is embedded in or bar, that will not becomecrystallized from d i t t ith th c ti Thi i t h of the molten metalPoured around complished by placing the rod in the mold for and P moltenmetal into Said e t0 the casting and pouring the molten iron into embedSaid member and 1 the Cestmg the mold around the rod to embed the rod incontaining said member t0 9 1n the meldthe casting in contact with thecast metal,

I have discovered that a nickel steel memft hi th ti t i i th d iembedded in cast metal 'll g the east" allowed to cool in the mold. Byreason of the ing does t become crystalhzed e does not heat of themolten metal of the casting 1 emlose its g t' a but t Stren h beddingthe rod 2 the tensile strength of the rather becomes lncl'eased and studer latter becomes greatly increased, the rod does greatly mcreflses thestrength h casmig not become crystallized and the casting becomparedWlth Such castmg mmus Smd comes practically unbreakable in the use for omemben which it is made. My improved pallet is F91 some purpose-S Iplace mckel Steel ca able of withstandino' repeated heating and rod in amold as a reinforce and pour molten It 1 t d th e S iron into the moldto embed said rod in the t P W 16 1 1 15 i g ifi 6 i S casting, andIallow the casting to cool. The 0 sltltermg 0,011 mm E 8 P 8 nickel steelalloy becomesheat-treated from well as Shocks lncldent to schargmg 5111'the heat of the molten metal embedding it teled e i e e Pallet f Pe insuch a way that the rod becomes greatly i the same in a sinteringmachine, during which creased in tensile strength with a non-crystalusesthe rod does not become crystallized and line structure, with the resultthat the castthe strength of the casting and its durability ingcontaining the rod becomes practically is increased.

Having now described my invention what I-claim is:

1. A sintering machine pallet comprising a cast iron bod'y containingone or more nickel steel reinforcing rods embedded therein, said rodscontaining less than 5% of nickel. I

2. A sintering machine pallet comprising a cast iron body containing oneor more nickel steel reinforcing rods embedded therein, said i'odscontaining between three and five per cent of nickel.

HENRY J0 STEI-ILI.

